You can use many other symbols in a flow chart but remember that these diagrams are used for communication. If you use symbols that only a few people understand, you may fail to get your message across. So, be sure to keep things simple.

Flow charts are easy-to-understand diagrams that show how the steps of a process fit together. American engineer Frank Gilbreth is widely believed to be the first person to document a process flow, having introduced the concept of a “Process Chart” to the American Society of Mechanical Engineers in 1921.

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